Apparatus for feeding pulverized fuel.



J. E. MUHLFELD. APPARATUS FOR FEEDING PULVERIZED FUEL. APPLICATION HLED 0m31.191s. RENEwED MAR. 2. 1917.

v Patented Oct. 23,1917.

' similar to Fig. l, showing I' certain new and useful Improvement in miran salaires rarnnrorrien JOHN n; MUHLFELI), .orscAnsDAL'n NEW YORK, AssIGNoR To LoooMoaIvE PULVERIZEDFUEL COMPANY, A oom?onarionl or DELAWARE- .APPARATUSFOR FEEDING PLVERIZED FUEL.

' Application ine December s1, 1913, serial To ZZ 'zo/wmf #may concern.' I

of'y Scarsdale,

A in the county of lVestchester and State of New York, have invented a Apparatus for Feeding' Pulverized Fuel, of

which improvement the follcwirig is a speciviication. p 5 l' i My invention relates to means for delivering pulverized fuel from a storage recepacle to one or more supply conduits: through which it is conveyed to a desired pointof delivery, and its object is to provide an apf paratusl of 1 such self-contained chalaoter which shall be of simple and inexpensive construction and readily applicableto and removable from operative, position, and by` which vat-continuous supply of pulverzed fuel may be maintained, in desired and determined quantities and without liability to clogging or obstruction of the discharge passage of the storage receptacle.

The improvement claimed is hereinafter fully v,Set forth. f

In the accompanyingdrawings: Figure l is avertical sectionithrough'the lower portion of a pulverized, fuelfstorage receptacle, illustrating-an embodiment of my invention; Fig. 2, a transverse section through the same, on the line a Lof Fig. l; Fig. 3, a section,

a structural modication; Fig. 4, a transverse section through the same, on the line b b of Fig. 3; and, Fig. 5, a partial similar section, showing a further structural modification.

My invention is herein exemplified in connection with a pulverized -fuel storage lreceptacle, l, which may be of any desired form and dimensions,

in and of itself, of my present invention,

need not be herein at length set forth. Re-

ferring first to Figs. l and 2, in the practice of my invention, I provide, at the-bottom of the fuel receptacle, oneor more .conveyer channels or pockets, la, any desired number of which may be applied, and two being shown in this instance. A discharge opening, lb, is formed in the bottom of each of the conveyery channels, anda conveyer, of

any suitable and preferred form, various'- forms of which are, known in the art, is Vfitted tooperate over the l in suchmanner as to carry pulvenized fuel to Said opening. The ablyyasshqwn, l of the screw type, Aand 'com- 5, on `a casing,

4'through `an opening, 6a,

and which, not being,

discharge opening conveyer is prefermanner.. pulverized fuel from the storage receptacle, which drops by gravity into the .Conveyer channel, will' be moved longitudi-- nally in the-latter and carried to the discharge opening, lb, thereof. The surplus' o'f pulverized fuel which passesover the- -discharge opening and is not taken up by the measuring wheel, receptacle 'by the wedging action of the conveyer against the. front, the conveyer thus acting both to feed fuel to the lower dis` charge opening andl to agitate and circulate it in the receptacle.

A measuring wheel, 8, the periphery of which is divided into a plurality of transverse grooves or recesses, 3a, issecured upon Specification of Letters Patent. Patented Oct, 23, 191.7, u

No. 809,696., RenewedlMareh 27, 1917. Serial iVm-157,847.

'the discharge opening. Upon rotation being imparted to the conveyor, in any suitable Tis forced back to the a shaft,v 4,' which is'mounted in bearings,

5, within which the measuring wheel rotates yZand fitsV comparatively closely. 'The shaft, 4, may be rotated as found most suitable under'conditions of. installation. A. delivery conduit, 6, located below therewith the casing, 5,'I communicates in--its top, locatedA immediately below, the measuring wheel, 3,- andleads to ',aff'desiredpoint of delivery,` as al boilerffu'r acefor'a chamber in communication th rewith.v` It will be vseen that a measured quantity of pulverized fuel will be carried from the conveyor channel to thev y .-elivery.- conduit,in each .revolution of the measuring wheel, its quantity being'dependentupon the'width'of face .of said wheel, andi the depths. of its peripheral grooves. While only one discharge opening and one measuring wheel are shown in connection with a vconveyer `clanneltwo or more may be applied, in the discretion Yof the constructor, the number thereof'being fprincipally'depend'ent upon 'the length-,ofg'the rapidity conveyer channel and the desire of feed to the fuel. 7

Figs., 3 and 'fication embodying` the "essentialjlbperlative principley of 'the apparatus abo1efdscribed,f and `differing structurally, therefromainithe f1r illustrate a structural-modi.. j

' case.

may, as shown, be rotated by spur gears, 4a,

particular that the shafts of the measuring wheels,'3, three of which are shown on each shaft, in this instance, are located in lthe saine vertical planes as, and parallel with, the eonveyer shafts, 2a, instead of being set at a right angle thereto, as in the former The shafts of the' measuring'wheels veyer channel or pocket of the fuel storage receptacle, in accordance'with operative conditions and installation requirements, without departure from the spirit and charaeteristic features of my invention.4

l I claim as my invention and desire to secure by Letters Patent: I

1. In an apparatus for feeding pulverized' fuel, thev combination, With a fuel storage receptacle having closed ends vand a discharge opening'in its bottom, intermediate of its ends, of a 'fuel'delivery conduit extending below the discharge' opening, means for conveying fuel through the receptacle across said opening, and means for transferring fuel, in measured quantities, from said opening to the fuel delivery conduit.

2. ln an apparatus for feeding pulverized fuel, the combination, with a fuel storage ,said casing.

receptacle having closed ends and a discharge opening .in its bottom, intermediate of its ends, of a conveyer adapted to move fuel longitudinally across 'said opening, a

fuel delivery conduit extending below said opening, a casing interposed between, and communicating with, said lopening and said conduit, and a measuring wheel fitted to rotate in said casing.

3 In an a aaratus for feeding )ulvcrized fuel, the combination, with a fuel storage receptacle having closed ends Aand a discharge opening. in its bottom, intermediate of its ends, of a screw conveyei'zdfitted'to ro tatey in the receptacle, abovesaid opening, and to inove fuel across it, a fuel delivery conduit extending below said openinga casing interposed between, and communicating with, said opening and said conduit, and

a periplierally recessed measuring wheel litted to rotate in said casing.

et. In an apparatus for feeding'pulverized fuel, the combination, with a fuel storage receptacle having closed ends and a discharge opening in its bottom, intermediate4 of its ends, of a screw conveyer fitted to rotate in the receptacle, above said opening, and to move fuel across it, a battle plate extending longitudinally above said conveyer, a fuel'delivery conduit extending below the discharge opening, a casing interposed between, and vcommunicating with, said opening and said conduit, anda peripherally recossedineasuring wheel fitted to rotate in JOHN E. MUHLFELD.

WVitnesses: l i

EMILY L. MYERS, C. E.v FLODINE. 

